Refactor|Client|libgui: Started revising window architecture

Began a large refactoring where the window architecture is
"re-imagined" with proper separation of concerns, and generic portions
are relocated to libgui. Hopefully after this window management is
finally up to Doomsday 2 standards.

In this commit DisplayMode, DDKEYs, and the persistent window state
management have been moved to libgui. Canvas's mouse and keyboard
event production has been abstracted behind Mouse/KeyEventSource,
so that instead of events they produce notifications.

Note: Not finished at all -- barely compiles on OS X, likely fails on
other platforms.

doomsday/api/dd_share.h

@@ -302,84 +302,7 @@ enum {
 
 ///@}
 
-//------------------------------------------------------------------------
-//
-// Key Codes
-//
-//------------------------------------------------------------------------
-
-/// @defgroup input Input
-
-/**
- * @defgroup keyConstants Key Constants
- * @ingroup input
- * Most key data is regular ASCII so key constants correspond to ASCII codes.
- */
-///@{
-#define DDKEY_ESCAPE        27
-#define DDKEY_RETURN        13
-#define DDKEY_TAB           9
-#define DDKEY_BACKSPACE     127
-#define DDKEY_EQUALS        0x3d
-#define DDKEY_MINUS         0x2d
-#define DDKEY_BACKSLASH     0x5C
-
-// Extended keys (above 127).
-enum {
-    DDKEY_RIGHTARROW = 0x80,
-    DDKEY_LEFTARROW,
-    DDKEY_UPARROW,
-    DDKEY_DOWNARROW,
-    DDKEY_F1,
-    DDKEY_F2,
-    DDKEY_F3,
-    DDKEY_F4,
-    DDKEY_F5,
-    DDKEY_F6,
-    DDKEY_F7,
-    DDKEY_F8,
-    DDKEY_F9,
-    DDKEY_F10,
-    DDKEY_F11,
-    DDKEY_F12,
-    DDKEY_NUMLOCK,
-    DDKEY_CAPSLOCK,
-    DDKEY_SCROLL,
-    DDKEY_NUMPAD7,
-    DDKEY_NUMPAD8,
-    DDKEY_NUMPAD9,
-    DDKEY_NUMPAD4,
-    DDKEY_NUMPAD5,
-    DDKEY_NUMPAD6,
-    DDKEY_NUMPAD1,
-    DDKEY_NUMPAD2,
-    DDKEY_NUMPAD3,
-    DDKEY_NUMPAD0,
-    DDKEY_DECIMAL,
-    DDKEY_PAUSE,
-    DDKEY_RSHIFT,
-    DDKEY_LSHIFT = DDKEY_RSHIFT,
-    DDKEY_RCTRL,
-    DDKEY_LCTRL = DDKEY_RCTRL,
-    DDKEY_RALT,
-    DDKEY_LALT = DDKEY_RALT,
-    DDKEY_INS,
-    DDKEY_DEL,
-    DDKEY_PGUP,
-    DDKEY_PGDN,
-    DDKEY_HOME,
-    DDKEY_END,
-    DDKEY_SUBTRACT, ///< '-' on numeric keypad.
-    DDKEY_ADD, ///< '+' on numeric keypad.
-    DDKEY_PRINT,
-    DDKEY_ENTER, ///< on the numeric keypad.
-    DDKEY_DIVIDE, ///< '/' on numeric keypad.
-    DDKEY_MULTIPLY, ///< '*' on the numeric keypad.
-    DDKEY_SECTION, ///< §
-    DD_HIGHEST_KEYCODE
-};
-///@}
-
+#include <de/gui/ddkey.h>
 
 //------------------------------------------------------------------------
 //

doomsday/client/client.pro

@@ -65,21 +65,6 @@ else:macx {
 else {
     # Generic Unix.
     !freebsd-*: LIBS += -ldl
-    LIBS += -lX11
-
-    # DisplayMode uses the Xrandr and XFree86-VideoMode extensions.
-    !deng_nodisplaymode {
-        # Check that the X11 extensions exist.
-        !system(pkg-config --exists xxf86vm) {
-            error(Missing dependency: X11 XFree86 video mode extension library (development headers). Alternatively disable display mode functionality with: CONFIG+=deng_nodisplaymode)
-        }
-        !system(pkg-config --exists xrandr) {
-            error(Missing dependency: X11 RandR extension library (development headers). Alternatively disable display mode functionality with: CONFIG+=deng_nodisplaymode)
-        }
-
-        QMAKE_CXXFLAGS += $$system(pkg-config xrandr xxf86vm --cflags)
-                  LIBS += $$system(pkg-config xrandr xxf86vm --libs)
-    }
 }
 
 # Source Files ---------------------------------------------------------------
@@ -351,17 +336,13 @@ DENG_HEADERS += \
     include/ui/b_util.h \
     include/ui/busyvisual.h \
     include/ui/busywidget.h \
-    include/ui/canvas.h \
-    include/ui/canvaswindow.h \
+    include/ui/clientwindow.h \
     include/ui/dd_input.h \
     include/ui/dd_ui.h \
-    include/ui/displaymode.h \
-    include/ui/displaymode_native.h \
     include/ui/fi_main.h \
     include/ui/finaleinterpreter.h \
     include/ui/guiwidget.h \
     include/ui/joystick.h \
-    include/ui/keycode.h \
     include/ui/legacywidget.h \
     include/ui/mouse_qt.h \
     include/ui/nativeui.h \
@@ -370,7 +351,6 @@ DENG_HEADERS += \
     include/ui/ui2_main.h \
     include/ui/ui_main.h \
     include/ui/ui_panel.h \
-    include/ui/window.h \
     include/ui/windowsystem.h \
     include/ui/zonedebug.h \
     include/updater.h \
@@ -407,8 +387,6 @@ win32 {
         src/windows/directinput.cpp \
         src/windows/joystick_win32.cpp \
         src/windows/mouse_win32.cpp
-
-    !deng_nodisplaymode: SOURCES += src/windows/displaymode_win32.cpp
 }
 else:unix {
     # Common Unix (including Mac OS X).
@@ -430,21 +408,10 @@ macx {
     OBJECTIVE_SOURCES += \
         src/macx/MusicPlayer.m
 
-    !deng_nodisplaymode: OBJECTIVE_SOURCES += src/macx/displaymode_macx.mm
-
     INCLUDEPATH += $$DENG_MAC_INCLUDE_DIR
 }
 else:unix {
-    !deng_nodisplaymode {
-        # Unix (non-Mac) only.
-        SOURCES += \
-            src/unix/displaymode_x11.cpp \
-            src/unix/imKStoUCS.c
-    }
-}
-
-deng_nodisplaymode {
-    SOURCES += src/ui/displaymode_dummy.c
+    # Unix (non-Mac) only.
 }
 
 # Platform-independent sources.
@@ -633,14 +600,11 @@ SOURCES += \
     src/ui/b_util.cpp \
     src/ui/busyvisual.cpp \
     src/ui/busywidget.cpp \
-    src/ui/canvas.cpp \
-    src/ui/canvaswindow.cpp \
+    src/ui/clientwindow.cpp \
     src/ui/dd_input.cpp \
-    src/ui/displaymode.cpp \
     src/ui/fi_main.cpp \
     src/ui/finaleinterpreter.cpp \
     src/ui/guiwidget.cpp \
-    src/ui/keycode.cpp \
     src/ui/legacywidget.cpp \
     src/ui/mouse_qt.cpp \
     src/ui/nativeui.cpp \
@@ -649,7 +613,6 @@ SOURCES += \
     src/ui/ui2_main.cpp \
     src/ui/ui_main.cpp \
     src/ui/ui_panel.cpp \
-    src/ui/window.cpp \
     src/ui/windowsystem.cpp \
     src/ui/zonedebug.cpp \
     src/updater/downloaddialog.cpp \